The Actual Definition of Muscle Tone. Muscle tone, also known as muscle tonus or residual muscle tension, is an unconscious low level contraction of your muscles while they are at rest. Essentially, muscle tone is what makes your muscles still feel somewhat firm while you are resting and not intentionally tensing them.
Everyone experiences abdominal pain from time to time. Other terms used to describe abdominal pain are stomachache, tummy ache, gut ache and bellyache. Abdominal pain can be mild or severe. It may be continuous or come and go. Abdominal pain can be short-lived (acute) or occur over weeks and months (chronic).
Belly pain is also known as Abdominal pain. Abdominal pain is pain that you feel anywhere between your chest and groin. This is often referred to as the stomach region or belly. Almost everyone experiences pain in the abdomen at one time or another. Most of the time, it is not caused by a serious medical problem.